100 



THE LICHEN FLORA OF QUEENSLAND, 



attenuate-compressed, frequently longitudinally striate or sub- 

 striate, casspitose, ramose,branchlets occasionally divaricate ; 

 cortical layer filainentose. Apothecia medium-sized, 1-2 m.m., 

 scattered, commonly whitish flesh-coloured ; spores ellipsoid, 

 M obtuse at either end, -014— -02 x -006— -01 1 m.m.; 

 straight or nearly so. Height of plant 1 — 3 in., thallus at 

 base 1 — 2 m.m. thick, occasionally basal portion compressed. 



Stjn. — rhyscia gracilis, Pers. R. gracilenta, Fee. 

 Hab. — Main Range, near Toowoomba. 



** Thallus K — , spores usually curved. 



4. R. fraxinea, Ach. 



Thallus yellow-white, straw-coloured, or glaucescent, pendu- 

 lous, straggling, subrigescent, longitudinally rugose or 

 nervose, elongated and attenuated at the apices ; cortical 

 layer filamentose ; laciniose with few broad lacinias. 

 M Apothecia large, plane, brownish-yellow or glaucescent, 

 shortly pedicelled, marginal or lateral, crowded ; margins 

 often simply recurved, from ring-like to obscure ; receptacle 

 rugose or plicato-rugose ; spores 1 -septate, -015 — *018x 

 •005 nun. 



Syn. — R. calicaris v. fraxinea. 



Hab. — On terminal branches of trees, common. 



5. R. Yemenensis, Ach. 



Thallus with small horizontal scale like base ; fronds stipi- 

 tate, glaucous or greenish, laciniate; lacinife linear, flattened, 

 with wa\ T y striations on their broadish (1 — 2*5 m.m.) 

 surfaces ; edges of lacinia? somewhat thickened ; cortical 

 layer tilamentose ; surface smooth ; apices bluntly pointed ; 

 gomdia large. Apothecia small, arising from the edges of 

 Sn. the lobes, roseate or flesh-coloured, rounded, kidney- shaped, 

 or irregularly oval. Spores '0125 x '005 m.m. ovate or 

 arcuate, l-septate, hyaline. Thecae cylindrical, 8-spored, 

 spores usually 1 -seriate. From specimen sent by Dr. 

 Knight to F. M. B. Dr. Knight in litt. F. M. B , says— 

 " Until lately always believed R. Yemenensis a form of R. 



